Means for holding in place laminations of alternating-current dynamos and motors.



0. E. WILLEY. MEANS FOR HOLDING IN PLACE LAMINATIONS 0F ALTERNATINGCURRENT DYNAMOS AND MOTORS.

APPLICATION FILED 1330.12, 1908.

938,033. Patented 0011.26, 1909.

. I WITNESSES: INVENTOR W 2 M y fl q 8 W BY ATTORNEY:

STATES PATENT OFFICE.

CHARLES E. WILLEY, OF LOUISVILLE, KENTUCKY.

MEANS FOR HOLDING IN PLACE LAMINA'IIONS OF ALTERNATING-CURRENT DYNAMOSAND MOTORS.

To all whom it may concern:

Be it known that I, CHARLES E. WILLEY, a citizen of the United States ofAmerica, and a resident of Louisville, county of J efferson, State ofKentucky, have invented certain new and useful Means for Holding inPlace Laminations of Alternating-Current Dynamos and Motors, of whichthe following is a specification.

My invention relates generally to the construction of alternatingcurrent dynamos and motors and particularly to means for holding inplace the laminations of alternating current dynamos and motors, andcomprises a novel split spring ring adapted to be seated in the frame ofthe machine to hold such laminations in place.

The objects of my invention are to improve and simplify means employedfor holding in place laminations of alternating current machines, and tomake such means easy to operate.

I will now proceed to describe my invention with reference to theaccompanying drawings, in which- Figure 1 shows a side elevation of theframe of an alternating current motor or dynamo, with the laminationsand holding ring in place therein. Fig. 2 shows a transverse section ofthe parts shown in Fig. 1. Fig. 3 shows a detail section and partialelevation of an alternative form of ring and frame; and Fig. 4 is a viewsimilar to Fig. 3 showing a further alternative form of ring and frame.

Referring at first to Figs. 1 and 2, A designates the frame of themachine and B the spring clamping ring hereinbefore referred to. Cdesignates a wedge used for expanding this ring. D designates thelaminations held within frame A. E, E designate grooves in frame Areceiving shoulders F formed on' rings B, the construction being suchthat when these shoulders F are within the grooves E said rings are heldagainst lateral escape. It will be noted that the peripheral faces ofthe shoulders F are beveled or conical so that, when one of the rings isto be inserted, merely pressing it against the annular frame tends tocontract the ring so as to admit it into the frame. G designates theslot or space between the ends of each ring B into which the wedge U isdriven.

The operation and manner of use of the Specification of Letters Patent.

Application filed December 12, 1908.

Patented Oct. 26, 1999.

Serial No. 467,229.

clamping rings B will be readily understood. In erecting the machine,the laminations D are put in place and then the rings B are inserted andpressed home. Mere pressure against these rings causes the ring tocontract until the shoulder F has completely entered the groove E, whenthe ring eX- pands again so that the shoulder engages said groove andholds the ring in place. Once the ring is in place the wedge C is inserted and driven home, said wedge preventing any possible accidentaldisengagement of the ring from the frame.

To remove laminations, one or both of the rings B is or are removed. Toremove a ring the corresponding wedge C is driven out and the ends ofthe ring are drawn together somewhat so as to reduce the diameter of thering until it will clear the shoulder E. The ring may then be removedreadily. To facilitate the drawing together of the ends of the ring B,as described, suitable holes H are provided in these ends, into whichsoles suitable tools may be inserted to draw the ends together.

As an alternative to having the shoulder F of the split ring beveled andarranged to engage a square shoulder in the frame, the inner edge of theframe may be beveled and the split ring have a straight shoulder. Thisis illustrated in Fig. 3 in which the frame is shown as having a squarecornered groove I, and the ring as provided with a square corneredshoulder K, the orifice of the frame into which the ring is to beinserted having around it a beveled face L which the edge of theshoulder K engages when the ring is pressed in place. This beveledshoulder will obviously act to draw the ring together.

The groove in the frame need not necessarily be of rectangular sectionof course. In Fig. 4 I have shown the groove as of section correspondingto the section of an inclined-faced shoulder F on the ring, as shown inFig. 2; this groove, in this Fig. 4, being designated by referenceletter M.

What I claim is 1. In a machine of the class described, the combinationof two members, viZ., a frame adapted to hold laminations and a splitring adapted to fit within said frame when such laminations are inplace, one of said members having a groove and the other of said membershaving a corresponding shoulder adapted to fit within such groove, oneof said members having also an inclined face which will act to contractthe ring when the latter is pressed home.

2. In a machine of the class described, the combination of two members,viz., a frame adapted to hold laminations and a split ring adapted tofit within said frame when such laminations are in place, one of saidmembers having a groove and the other of said members having acorresponding shoulder adapted to fit within such groove, one of saidmembers having also an inclined face which will act to contract the ringwhen the latter is pressed home, and means positively holding the endsof said split ring apart.

within said frame when said laminations are :0

in place, said ring having a shoulder, that side of which shoulder whichis nearest the frame When the ring is being inserted, being beveled,whereby pressure of the ring against the frame tends to contract saidring.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CHARLES E. \VILLEY. \Vitnesses M. GOULD, M. PERRY.

